John chaelton



(No Model.)

J. CHARLTON.

SAW SET.

No. 302,891. Patented Aug. 5, 1,884.

JOHN CHARLTON, OF NEWARK, NEW JERSEY, ASSIGNOR TO DRAKE 85 CO., OF SAME PLACE.

SAWMSET.

SPECIFICATION forming part of Letters Patent No. 302,891, dated August 5, 1884.

Application filed August 15, 1883.

.To all whom t may concern:

Be it known that I, JOHN CHARLTON, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvementsin Saw-Sets; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will en- 4 able others skilled in the art to which it apro pertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification. 4

This invention relates to the class of saw- I 5 sets having retractile punches operated by a lever arranged to engage with said punch at its posterior extremity and throw the same forward to set the teeth of the saw individually, said saw-sets being provided with adzo justable suplgiorting-plates.

The invention consistsin the improved sawset, constructed and arranged substantially as will be hereinafter set forth, and finally embodied in the claim.

Heretofore saw-sets ofthe class above mentioned have in some eases had the said adjustable plate, where it engages with the sawbody, pitched at an angle corresponding with the anvil or die, or nearly so, the side view 3c showing Va straight line or lines meeting at a slight angle. By this construction, when the anvil has been changed or readj usted, considerable care must be exercised to bring the adjustable supporting-plate into proper re- 3 5 lation to said anvil to iirmly hold the saw in position. Again, in the instance referred to, the said supporting-plate projects upward to the top line of the punch, so that the said supporting-plate acts to rebend the set teeth. 4o Thus formed7 the said plate also interferes with the free lateral movement of the sawset over the dentate `edge of the saw, rendering said saw-set defective as an article oi' manufacture, the defects of which article it is the object of this invention to overcome.

Referring to the accompanying drawings, in which similar letters of reference indicate like parts in each ofthe several gures, Figure (No model.)

lis a side elevation of a saw-set, partially in section, and Fig. 2 is a bottom plan of an ad- 5o jnstable plate, forming a part thereof.

In carrying out the invention I form a body or frame-work of the device, consisting of the handle c, fulcrumal portion b, the punch-bear ings c c, the arched arms d, having an opening between and adapted to ovcrlie the toothed edge ofthe saw, the seat for the adjustable plate, and the slotted seat c for an adjustable die, f. Upon said fulcrumal portion is secured the lever g, having the depending 6o portion g to engage with the posterior eX- tremity ofthe punch to throw the latter into engagement with the saw-teeth. Vitlhin said bearings 4c c is arranged an automatically-re tractible punch, h, having the spring t' in 65 proper relation to it to cause automatic retraction. The body of said saw-set is provided with a suitable chamber for the spring, as shown. lt is also transversely recessed to receive thesaw. The die fis adjustablyarrangedr on the seat c, and is beveled, as shown, to engage with the saw on the side thereof opposite that engaging with the punch. The seat m is provided with an adjustable or, to be more specific, what may be denominated a rectilinearly-n1ovable77 plate, a.

The parts thus described are not, broadly, newin this device, but are common to the class of saw-sets of which my improvement is an individual member. The adjustable plate n, 8O having the slot o to receive the set-screw @difi'ers from those heretofore in use, in that the upwardly-projecting portion a has a curvilinear outline when viewed iu side elevation. By this construction, no matter what the position of the opposite die f may be, the rounded extremity engages at one point only with the saw, that point being at the root or foundation ofthe saw-tooth and changeable in its relation to the saw, as will be understood. The eXtrem- 9o ity of the upwardly-projecting portion is also rounded7 and lies at a point yat or below the axial line p3 of the punch, to prevent an interference ofthe plate with the teeth when the saw-set is moved laterally from tooth to tooth in the process of setting the same.

Having thus described my invention, what In testimony that I claim the foregoing I I claim as new `ishave hereunto set my hand this 25th day of In a saw-set, the combination, With a punch, July, 1883.

as h, and a die, as e, of a plate, m, adapted to 5 be adjustably secured to said saw-set, and hav- JOHI\T CHARLTON.

ing the upwardly-projecting portion n', with a rounded upper extremity7 n, lying at or below Vitnesses:

the axial or center line ofthe punch, and ar- OLIVER DRAKE,

ranged to operate in the manner and for the CHARLES H. PELL.

Io purpose set forth. 

